table{
    width: 70%;
    border: 1px solid #ccc;
    margin: 5em auto;
}
tbody{
    border: 1px solid #ccc;
    box-sizing: border-box;
}

th, tr, td {
    text-align: center;
    border: 1px solid #ccc;
    height: 2em;
    background-color: #CFF;
}
.del{
    background-color: red;
    width: 3em;
}